Photographic-printing stand.



N. DE CLARK.

PHOTOGRAPHIO PRINTING STAND.

APPLICATION FILED MAR. 2. 1912.

Patented Jan. 28, 1913 I l GI il I I /I ===::::LJ E l I & (211E I Q Q 5?is v INVENTOR Jlebson Ema N. DE CLARK. PHOTOGRAPHIO PRINTING STAND.

APPLICATION FILED MAE. 2, 1912.

Patented Jan. 28, 1913,.

5 SHEETS-SHEET 2.

N. DE CLARK. PHOTQGRAPHIC PRINTING STAND. APPLICATION FILED MAR. 2,1912.

1,051,700 Patnted Jan.28,1913.

5 SHEBTS-SHEET 3.

W/TNESSES l/VVENTOR N. DE CLARK. PHOTOGRAPHIG PRINTING STAND.

I APPLICATION FILED MAILZ, 1912. I 1,051,700. Patented Jan.28, 1913.

5 SHEETS-"SHEET 4.

IIWLWTO-R g3 Jmsmmrk,

' WHEY N. DE CLARK.

PHOTO RAPHIG PRINTING STAND.

APPLI ATION FILED MAB. 2,1912.

5 SHEETS-SHEET 5 Jtekom 130 Clark,

Patented Jan.28,1913.

rno'roenarnrc-rninrnve swarm Specification-oi Zette rs l a tent.

' j"fnnnsonnncnanx, or JERSEY CIT'JEi-NEWJEBSEY. 1

Application as March a, 1912. Serial No. 681,055.

T tlltltchmn it may concern Be it known that I, NELSON DE CLARK, a

, citizen of the United States, residing at Jersey City',,in the countyof Hudson and State of-;Ne\ v ersey, have invented new and usefulImprovements in Photographic- -.'Printing Stands, of which the followingis a specification.

This invent on relates to photographic printing stands and comprisescertain new and novel features, the object being to pro- .vide' a,machine vin' which the sensitized f paper lis' exposed to the light ofelectric la'mpsffor certain periods, the time of exposurebeingautomatically regulated and certai' -signal lights being provided toindicate the length oftime which the print has been expos'ed when theprinting lights are shut off. These and other details or objectso'fftheinvention are more fully, described in the' following specification, set

forth inthe claims and illustrated in the same.

drawings, wherein, Y

Figure 1 is a front elevation of the improved stand. Fig. 2 is avertical sectional view through the printing frame. Fig. 3 is'a planview of the stand. Fig. 4 is a View from the rear of the stand. F ig'. 5is a sectional view through the printing frame.

.F 6 is av similar view with the back partly elevated. .Fig.j 7 is aside elevation of the numbering device. Fig. 8 is a front view of whichprints are to be obtained. The plate 21 is frosted in" order to dififusethe light and produce an even arrangement of the light rays toe'flectually print pictures from the negative 22-. i The opening '20 isprovided with doors 23 and 24' actually constituting one door made intwo parts. hinged together and closed by means of the toggle levers 26car- .ried on the shaft 27. The shaft 27 is provided with an arm 28which is connected the treadle 51.

Fig.;.9'is a side view of the timewith a plunger 29 carrying at itslower end a piston 30, working in a cylinder 31 and acting as a cushionto prevent the-rapid operation of the doors. This plunger 29 carrieslateral bars 29 on which rest a weight and against the lower bar ridesan arm 53 on the shaft 54 which is rocked by' the arm 55 connected bymeans of a rod with The paper to be printed is placed on the frostedglass and the treadle 51 pressed downward, causing first section of door23 to close and hold paper in position while the hand is withdrawn.Further pressure on thetreadle causes section 24 to close and hold thepaper tight against the negative 22 while ,the printing is beingperformed.

The printing is done by means ofelectric lamps 32, 33 and 34carried ina. box 35 and so arranged beneath the negative at, a point to producethe best results. These lamps are controlled by means' of a switch 36which will be best illustrated in Figs. 11, 12 and 13 and which conductsthe electric cur-' rent through the wire 37 to the shaft 38 of the knob39. From the contacts 40, 41, 42, 43, 44 and 45, wires run to thevarious lamps as is shown in Fig. 14 so that as the contact finger 46connected with the shaft 38, is swung around the base of the switch, oneof its contacts will either make connection with the point 42,;t-wo ofthem with the points 40 and 41 or all three will'ma-ke contact with thepoints 43, 44 and 45 so that either the lamp 33 may be lighted or lamps33 and 32 may be lighted or all three maybe lighted in order to print alarge or obscure photograph or the lights arranged to correct defects inthenegative by proper shading.

The contact finger 46 has three points which are connected by means ofwires 47 with the shaft 38 of the switch, and the finger 48'is alsoconnected with the shaft, and when depressed makes contact with a finger49 connected withthe various lamps to produce the circuit as a test toprove that the same isin working order. t 1

Within the'box 15 is a small lamp 50 which is continually lighted, andin order to close the circuit and render the whole ap paratusoperatable, the treadle 51 is pressed downward. closing the switch 52carried by the short arm 53 on the shaft 54 and having arms 55 connectedwiththe treadle but hav-- ing return springs 56 which break the cir-.

(ant and shut off the lights, besides. re-

leasing the weight 57 of the plunger 29 so that the doors 23 and 24:will jump open.

Connected with the plunger 29 by means of the weight 57 and fork 58, isa rod 59 which passes through the top of the box 15 and connects withthe numbering device shown in Figs. 7 and 8, consisting of a series ofdisks 60 with numbers on their edges and each one having a ratchet 51 tobe engaged by a pawl 62 which is pressed inward every time the numberdisk on the right in Fig. 8 makes a rotation so as to force the roller63 at the end of the pawl against the cams (it on the top of the box.This engagement results in the primary disk rotating the next disk afterhaving counted ten units. Each disk is provided with one of these pawlsto consecutively number each exposure.

The operation of the lever performs two functions. The first movementswings the arm 53 beneaththe weight. 57 and elevates the plunger 29 soas to partly close the doors, the lower end of the plunger being slottedand throughwhich passes the shaft 54 to actas a guide for the plungerduring its movement. The arm 53, after it c0mpletes its movement inclosing the doors, still continues to move while the doors are held downand the paper secured and locked against the glass-and its continuedmovement throws in the switch 52 and illuminates the interior of the box35. Then the pressure on the treadle is released, the springs 56, actingon the arms 55, return the arm 53 to its inoperative position, quicklyshutting off the lights while the dash part 31 relieves the parts of anysudden jar. The release of the weight 57 throws the plunger 29 downwardand opens the doors,

the second dash part also relieving the weight of too rapid movement Aswill be seen in-Figs. 5 and 6, a numboring device 65 consisting of therubber band or hands 66, carrying consecutive numbers, is pivotedon thedoor 24 and operated by a lever 6.7 so that when the door. is swungupward as shown in Fig. 6, the number is inked'by means of the roller 68and as the door is swung down asshown in Fig. 5, the number on the band66 will be printed on the paper exposed to the negative. With eachoperation of the doors, the printer is swung on its pivot'69 and eitherinked or caused to print on the back of the sensitized paper. As will beseen in switch 70 is provided and which may be operated from the frontof the box 15. This switch is connected with a coil 71, which is incircuit with the magnet 72 of the time mechanism 73 so that the devicemay; be used withthe printing lights only or have the time mechanismthrown in to notify the operator of the expiration of a certain timelimit.

Figs. 2, and 14, a

When the current pames.

through the coil 71, it extinguishes a lamp 7t which is a red light toindicate that the time mechanism is in operation and the coil 72 drawsdown a brake 75 which normally presses against the under side of the hub76 of the index 77 so that when the hub is released, the clock-work 78causes the index to rotate toward a contact screw 78 on the handle 79.The handle 79 isjournaled about the center of the index shaft'andcarries a pointer 80 to designate the time which the index has totravel.

As best shown in Fig. 3, it will be seen that ,the time mechanism setwithin a recess at the right hand side of the box 15 and which hassecond points around its edge. The current is now on magnet 72 and theindex 77 is traveling between the contacts 81 and 78. When the indexniakcslcontact with the point 78, energizing the coils 82, they act (penthe armature to rotate a pulley by means of a link 85. and this pulleyacts upon a similar pulley 86 on the shaft of t '5. index. immediatelyreturning it to the ccntact 81. At the same time the current is sentthrough an elcctroniagnet 87 which actuates the switch and opens thecircuit of the lamps 32. and 3 1. extinguishing them so that furtherprinting prevented. hen the electromagnet 72 is dormant, it closes theswitch 89 which illuminates the red light 7st and shows that theprinting is not being performed. it the same time the brake 75 isreleased so that the index may be returned to its starting point 81.Upon the release of the treadle 51. all of the circuits are destroyedand the device rendered inoperative by opening the switch 5:2. The doors23 and it are then thrown up and the print removed. The switch 70 isused only to make a complete circuit with the timing device and when itis open, the timing device is not working. The machine can be workedwith or without timing dcvice by using switch 70. The light 71 isextinguished and the operator knows that the circuit is complete and thework is being performed. The index 77 has been released from itsstarting point- 81 and is traveling the predetermined distance to thecontact 78, when, upon reaching that point, the lights are extinguishedas indicated by th signal 74-.

It is obvious that the details of the invention may be otherwisearranged and modified without departing from the essential featuresabove described and the de vice may be operated to advantage and performa great. amount of work in consequence of the device being compact andall the parts within reach of the operator who is notified of theexpiration of the time which the prints should be exposed.

The side compartments 17 may be used for baths, or any other desiredpurpose so no time will be lost.

that theoperator'during the interval of exposure may be developing theprints that A button 90 is-located at oneside of the printing frame andcarries a lever to tilt the negative in order to readily manipulate theprint.

What I claim as new and desire to secure by Letters Patent is,

1'. In a photographic printing stand, the combination with a standhaving a box with an opening in its top, of a lid for the openbeneaththe opening with the lid, a signal lamp at the outside of the box,clock-work in the other opening, a movable arm carrying a contact pointforming a part of the circuit, an arm actuated by the clock and adaptedto make connection with the contact, a brake adapted to hold the latterarm for movement, means connected with the contact point for returningthe contact arm to its normal position, and-means tor entting out one ormore of the printing lamps.

3. In a photographic printing stand, the combination with a box havingopenings in its top, of a lid to one of the openings, a lever and togglejoints for closing the lid, an open box with lamps beneath the openingwith the lid, an electric circ t embracing the lamps, a signal lamp inthe circuit, an indicator in a second opening, clock-work for theindicator, a traveling arm operated by the clockfwork, means forcompleting the electric circuit and releasing the arm and lighting thelamps, a contact point on the indicator arm, a cooperating contact onthe traveling arm and adapted to extinguish the Y lamps, and means forreturning the latter.

arm to its starting point.

' 4. In a'photographic printing frame,'the combination with a boxmounted on legs and having troughs at each side, of a top with openings,a lid for one of the openings, means for closing the lid, an electriccircuit, a switch in the circuit, a treadle adapted to close the lid andthe switch, a movable box with lights, a scale, an indicator adapted tobe moved around the scale and carry a contact point in the circuit, amovable finger adapted to engage the contact and also in the circuit, anelectromagnet adapted to release the finger when the treadle isoperated, an electromagnet energized when the finger makes contact,clock-work operating the finger, apulley operated by the armature of thelast electromagnet to return the finger to its starting point, means forcutting out I the lights when the bering stamp automatically operatedwhen the lid is closed, and a roller for inking stamp when the lidopens.

In testimony whereof I aiiix my signature in presence of two witnesses."

NELSON DE Wit-nesses:

' Roy L. CALAMIA,

EDWARD M. TAILOR.

contact is made, a num- CLARK.

